/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.http;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Represents an HTTP cookie as a name-value pair consistent with the content of
 * the "Cookie" request header. The {@link ResponseCookie} sub-class has the
 * additional attributes expected in the "Set-Cookie" response header.
 *
 * @author Rossen Stoyanchev
 * @see <a href="https://tools.ietf.org/html/rfc6265">RFC 6265</a>
 * @since 5.0
 */
public class HttpCookie {

    private final String name;

    private final String value;


    public HttpCookie(String name, @Nullable String value) {
        Assert.hasLength(name, "'name' is required and must not be empty.");
        this.name = name;
        this.value = (value != null ? value : "");
    }

    /**
     * Return the cookie name.
     */
    public String getName() {
        return this.name;
    }

    /**
     * Return the cookie value or an empty string (never {@code null}).
     */
    public String getValue() {
        return this.value;
    }


    @Override
    public int hashCode() {
        return this.name.hashCode();
    }

    @Override
    public boolean equals(Object other) {
        if (this == other) {
            return true;
        }
        if (!(other instanceof HttpCookie)) {
            return false;
        }
        HttpCookie otherCookie = (HttpCookie) other;
        return (this.name.equalsIgnoreCase(otherCookie.getName()));
    }

    @Override
    public String toString() {
        return this.name + '=' + this.value;
    }

}
